Nylabone's Puppy Teething Keys chew toy is made with soft, puppy-friendly material to satisfy the chewing needs of teething pups and encourages positive chewing habits from a young age. Plus, the bristles raised during chewing help clean teeth and prevent tartar buildup. The perfect puppy teething toy for pups who love to chew! (This chew toy is not for puppies with adult teeth or for powerful chewers. For puppy's upto 35lbs.